I contacted him with a "Hi Yavn" when we entered Town Square at the same time yesterday (on another character). I didn't have any questions pop into mind and nobody else even seemed to know who he was, but he did come to my rescue when a boy wouldn't accept that I don't do taken.

My hero.

Really, just kidding, but for those who think staff don't do anything about taken, he just walked up to us and said "Don't do taken". The boy proceeded to say he doesn't, he was just bored and being silly. Yavn said "I thought so". I thought it was a cool way to handle the kid. Then Yavn left and the kid tries to tell me it wasn't the real Yavn.